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Re: [T3] FFFFRRRRUSTRATING brake problem!


On 17 Dec 98, at 22:20, Ernest wrote:

> New front rotors, calipers, rear drums
> and cylinders, and all new pads. The master cylinder is only a couple of
> years old so I left it in place, along with the old brake lines. After
> all that, the car pulls to the left now, and the right front sticks,
> when I make a hard stop.

One thing that goes wrong with these cars after many years is that 
the lining of the rubber brake lines seems to partially delaminate 
and fall into the bore of the line.  This clogs up the line and 
eventually acts like a check valve.  Thus fluid can get to the wheel 
under the pressure of the MC, but it can't, or it just takes a long 
time, to get back.

The easy test for this is to open each bleed valve in turn and see if 
fluid drips equally fast from each one.  You should replace the 
rubber line leading to any wheel that does not drip, or that drips 
noticably slower than the others.  I suppose a crimp in a steel line 
could cause the same symptom, so you should run your hand over all 
these to check for smooth bends, too.

It is also possible that you have a caliper that is just sticking on 
its own.  This is a perennial problem with type 3s, but you should 
not be having it with new calipers.  I regularly rebuild sticky 
calipers to cure this, but if you have a new caliper that is sticking 
then the place that sold it to you should replace it.

If they won't help, you or I can rebuild it.
 
Jim
-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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